Here's how to use the cropping tool (Show step-by-step instructions including before-and-after examples--include your name so I know who gets credit): Sam Steele :)

1. Copy and paste two images into photoshop
2. With one of the pictures, use the lasso tool and outline the part of the picture that you want to move into the other image
3. When you are done outlining the image with the lasso, select the move tool
4. Then click on the outlined part and drag it onto the other image
5. From here you can reshape and resize a junk

Here are examples of student projects using this tool:

Tyler Boice's Cropping